Stop for sliding window sashes



Maly 3, 1927.

6. E. WOOD sToP FOR SLIDING wINDow sAsHEs vFiledAug. 2. 1924 a, @GEMM lor' down movement.

Patented May 3, 41927-.

UNiTEDsTATEQS GEORGE y-PATENT lorries.

EDMOND Woon, or WELLINGTON, NEW zEALANnAssiGNon oF ONE-HALF To CHARLES :RICHARD LAMB, OF WELLINGTON, NEW ZEALAND. 'p

` Js'ror ron sLInING WiNnoW sAsHrs. v

Application nie-a August 2, '1924, serial No. 729,830, andan, NewY zeiana september 5, 1923.

This invention vrelatesto sashes `and 'the like, ofthe type slidable in guides or frames without the aid of balance lweights, and wherein spring pressed inembersvandracks areused between the guides or frames and the sashes, for the purposeot' holdingrthe latter in any desired raised position. e

The object of the invention is to provide improved sash holding andk locking means o the aforesaid type."

According to this invention the improved sash stop or holder comprises frames o r casings fitted with spring pressed plates slidable to and from the sash, and recessed into the frame or guides in which the sash operates,

one at each side of `the latter, said slidable plates being provided with roundedprojections, which under the actionof the springs" protrude Vfrom the frame orguides, and engage racks recessedin the sash edges. e The springs are made strong enough to keepthe rounded projections engaged in. the rack 4sofas yto hold the sash againstjdownward movement when released after beingraised, 4but are not "strong enough to prevent the sashy from being moved up or down, as required` The means for locking the sash'against movement` either up or down, consists of a f flat bar member vwhich is entered in the 'fraineo'r casing beh-indrthe sliding" plate therein, and .is capable of being turned to prevent movement of the latter,`whereby the yrounded projectionsfare unable to be moved from engagement in the" racks, in the sash, and the latter is thereby locked lagainst up In the accompanying drawing vin conjunction with. which the-,invention` wifll"be further described f Figure l 'is an elevationof a window ffitfted with the'improved means. j 'j Figure 2 isa view7 of portion ofan outer vertical edge of a sash, with arack recessed therein. l Figure 3 a vertical 'sectional view'on the line A-A Figure 2., y

Figure 4 is a p'artse'ctional" elevation of` a sash anda window frame Showing the improved sash holding and locking meansfitted thereto.

Figure 5 is a sectional line BwB, Figure 4, y y

Figure 6 is a 'perspective View `of 'theloekplan view on `the ing member while f` e e j and f Figure l0l a Vpart sectionall elevation, il

" Figures?, 8 an'd9are `sectional elevations lustrat'ing modifications"l Each vertical member of a sash 1 has re? ends ofthe recesses 3' ywith,theshallow ends` thereof are rounded both; where they join the deep ends and where they ljoin the shallow ends, and that said portions 2a are noty at right angles to the sash 1 but slope upwards.' Y j i Also the toothed ortion'of the rackis not` ofuniforni width t roughout `the length oi' thelatter, but instead said ,toothed portion has its greatest width at each deep end and k`i`r01n each `of the latter the toothed portOn tapers downwards to a yshallow end, until it joinszwith the next vdeepend, where it enlarges again toits greatest width.`

y 'i'lfhe rack therefore has formed therein a series of recesses f3 each otwhi'ch is deeper and wider at its upper end than at its lower en d each ot' the latter being joined with the wide andl deep end ofthe recesses 3 next below by a rounded and sloped portion 2a.

l" The racks 2 extend the full height of the l sash, and opposite eachof the former therev is recessed into the window frame 4, a casing i or frame 5, secured `(Figure 4). i

Each frame 'or casing 5 has fitted therein- "therein by screws 5a a plate 6 slidable to'and fromthe sash 1,

saidfplate havingon itsv outer side rounded projections 6EL the diameterot which is equal to the diameter of the widest or upper ends of the recesses 3 in the racks 2.

The platee is pressed towards the sash 1 by springs 7 'fitted in the frame or casing 5, said'plate being prevented from leaving the latter by the inturned edgesor projections 8 onl said frame or casing'tFi'gure `5),

`Wlien the plate 6 is pressed by `thesprings 7 against the inturned edges or projections 8,

the rounded projections 6a protrude from the window frame 4', a Adistance equalto .the

depth of the deepest ends 'of-the recesses 3 in the racks 2. Y

'.llhe springs? are made strong enoughto keep, therounded projections 6*` in engagementin the "recesses 3` of the rack 2 s`o as to 2 y y A1,627,530() t hold the sash in a raised position after being pushed'up and released,`but said springs 7 are not strong enough to prevent the racksV 2 from being forced past the projections 6a when it is desired to raise'or to lowerthe` sash. 1 .f i. When raising the sash 1, the rounded' projections 6EL and plates 6 are forced"graduallyV into the frames or casings 5, by the long slopes lfrom the deep to the. shallow ends of' the recesses 3, each time one of the latter `passes a rounded pro'jection`6, but immediately a portion 2a passesa projection 6a .the latter is forced sharply into the upper or deep end of the following'recess As a rounded projection 6a forced out ot a recess 3, the part of thetormerentered-in therecess becomes smaller in diameter and each recess 3 is therefore 'made to taper or to narrow in width downwards as shown in order that no matter how much of a projection GfL is entered in a recess 3, 'said projection 6a will at all times neatly lit the recess, and movement of the sash `l side ways 11, is inserted ina frame or casing lbetween' the sliding plate 6 therein and t e back of said frame or casing. The bar member 9 isv of such awidth and is so located that upon being turned. on to its'flat side as shown inlFigure 4, itwill prevent inward movement ofthe plate `6- and projections 6l and owing to the latter being entered in recesses 3, .movement of the `sash l either up or down will be prevented.

The opening 10a through ywhich the bar member 9 isl insertedin the 'frameorcasing 5, contains a stop 11a whichprevents the bar member 9 frombeing given more than. a quarter turn which is all that is required, either to lock orI to unlock the sashv l.

vWhen upper and lower sashes 1 are'fitted in a window frame as in Figure 1 the frames or casings 5 for the lowersash are fitted in the window trame near the top of the lower sash', while the trames orcasings 5 kin respect of the uppery sash are fitted in the window frame near the bottom otv said` upper sash. These positions are necessary in order to enable the sashes 1 toy be` moved as fan as possible without becomingvdi'sengaged from the` projections 6a. l i",

' Only one locking bar member 9 needbe `providedin respect of each sash, and said bars 9 are cross grooved at intervals as at 9a, 'in order that they may be broken oit' and made a length to suit 4the .particular frame in which they are being fitted.

'Instead of vthe projections `6e 'being made integral with theplate 6' as shown `in Fig- 1 ures 4v and 5, they can consistof balls 12 held in sockets 18 on said plate, see Figure 7.

Also in a further form the projections 6 can consist of round nosedr plungers 14 adapted to be forced through a fixed plate 15 Y on the yflratme creasing 5 by springs 16 'the and being housed in cups 17, which when the plate 'is'torced torward'by turning the locking bar member 9, engage behind the plungersv 14 and prevent the latter from lbeing moved into the frame or casing 5.

In the formshown in 'Figure 9`thep`lungers 14 are without stems and'with the sprin `s j lwork in the cups 17, pins 18 from said plungers being entered in slots 19 in thel cups 17.

The slots 19 4are long enough to permitthe necessary movement of the plungers 14 1n the cups 17 as the sash 1 is raised orA lowered, but whenthe bar member 9 is turned toits locking position itforcestheplate 6 towards the sash l and brings the inner ends of slots 19 up againstthe pins 18 thereby preventing backward movement of'theplungers' 14 and effecting the locking ofthe'sa'sh, j

'In the form shown in Figure 10 theslid'- ingiplate 6 has secured thereto a corrugated strip 20 adapted to engage and workin a lCorrespondingly corrugated'strip 1 recessed in the edgeofthe sash in a manner similar to a'strip, v2.

when raising a sash i need withthe form of rack illustratedin rFigures 2 and 3, the

llos

gradual forcing inwards of the rounded projections 6?" or the plungers, `14`b the long slopes of' the recesses 3 has thee ectvofcon- 'siderably easing'they raisingot thesash, as

in the latter operation the weight of the latter 'hasto be considered.,` i y t When the sash is released while in a raised position theengage'ment of the projections 6a or the plungers 14 below-the steeper or sloped portions 2ZL of thefrack underthe action ofthe springs is res lonsiblelior the sash being held inits raise position.

The operation` of loweringthel sash, when the sharper or s'lopedportions 2arequi'red to be forced .past therounded projections 6 or i the r operation.`

. what rd@ claim andfdsire to obtain by the plungers'l4, is comparatively easyowing Letters Patent of the United States of f America is Y 1.A Stopmeans for windowsash and the cess, a fixed member slidably receiving the slidable member, resiliently controlled detentmeans carried by the fixed member and coacting with the rack, the rack comprising a strip of material having alternate wide and narrow socket and projection portions, they 2. Stop means for window sash and the like, comprising, a recessed slidable member to be vertically positioned, a rack in the recess, a fixed member slidably receiving the slidable member, resiliently controlled detent means carried by the fixed member and coacting with the rack, the rack comprising a strip of material having alternate wide and narrow socket and projection portions, the plunger means including a plate positioned opposite the rack, resilient means `biasing' the plate toward thev rack, and

rounded detents on the plate and contacting with the rack.

3. Stop means for window sash and the like, comprising, a recessed slidable member to be vertically positioned, a rack in the recess, a fixed member slidably receiving the slidable member, resiliently controlled de'- tent means carried by the fixed member and coacting with the rack, the rack comprising a strip of material having alternate wide and narrow socket and projection portions, the plunger means including a plate posi tioned opposite the rack, resilient means biasing the plate toward the rack, and

rounded detents on the plate and contacting with the rack, the detents being integral with the plate, a casing mounted in the fixed member and slidably receiving the plate, pins `carried by the casing, springs sleeved on the pins and bearing against the plate, and means for positively locking the plate against movement with its detents bearing against the rack.

In testimony whereof I have signed my name to this specification.

GEORGE EDMOND WOOD. 

